diff options
Diffstat (limited to 'fs/xfs/xfs_bmap.c')
| -rw-r--r-- | fs/xfs/xfs_bmap.c | 363 |
1 files changed, 282 insertions, 81 deletions
diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c index 26939d364bc4..890ad3528174 100644 --- a/fs/xfs/xfs_bmap.c +++ b/fs/xfs/xfs_bmap.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * Copyright (c) 2000-2006 Silicon Graphics, Inc. * All Rights Reserved. * * This program is free software; you can redistribute it and/or @@ -101,6 +101,7 @@ xfs_bmap_add_extent( xfs_fsblock_t *first, /* pointer to firstblock variable */ xfs_bmap_free_t *flist, /* list of extents to be freed */ int *logflagsp, /* inode logging flags */ + xfs_extdelta_t *delta, /* Change made to incore extents */ int whichfork, /* data or attr fork */ int rsvd); /* OK to allocate reserved blocks */ @@ -118,6 +119,7 @@ xfs_bmap_add_extent_delay_real( xfs_fsblock_t *first, /* pointer to firstblock variable */ xfs_bmap_free_t *flist, /* list of extents to be freed */ int *logflagsp, /* inode logging flags */ + xfs_extdelta_t *delta, /* Change made to incore extents */ int rsvd); /* OK to allocate reserved blocks */ /* @@ -131,6 +133,7 @@ xfs_bmap_add_extent_hole_delay( xfs_btree_cur_t *cur, /* if null, not a btree */ xfs_bmbt_irec_t *new, /* new data to add to file extents */ int *logflagsp,/* inode logging flags */ + xfs_extdelta_t *delta, /* Change made to incore extents */ int rsvd); /* OK to allocate reserved blocks */ /* @@ -144,6 +147,7 @@ xfs_bmap_add_extent_hole_real( xfs_btree_cur_t *cur, /* if null, not a btree */ xfs_bmbt_irec_t *new, /* new data to add to file extents */ int *logflagsp, /* inode logging flags */ + xfs_extdelta_t *delta, /* Change made to incore extents */ int whichfork); /* data or attr fork */ /* @@ -156,7 +160,8 @@ xfs_bmap_add_extent_unwritten_real( xfs_extnum_t idx, /* extent number to update/insert */ xfs_btree_cur_t **curp, /* if *curp is null, not a btree */ xfs_bmbt_irec_t *new, /* new data to add to file extents */ - int *logflagsp); /* inode logging flags */ + int *logflagsp, /* inode logging flags */ + xfs_extdelta_t *delta); /* Change made to incore extents */ /* * xfs_bmap_alloc is called by xfs_bmapi to allocate an extent for a file. @@ -203,6 +208,7 @@ xfs_bmap_del_extent( xfs_btree_cur_t *cur, /* if null, not a btree */ xfs_bmbt_irec_t *new, /* new data to add to file extents */ int *logflagsp,/* inode logging flags */ + xfs_extdelta_t *delta, /* Change made to incore extents */ int whichfork, /* data or attr fork */ int rsvd); /* OK to allocate reserved blocks */ @@ -530,6 +536,7 @@ xfs_bmap_add_extent( xfs_fsblock_t *first, /* pointer to firstblock variable */ xfs_bmap_free_t *flist, /* list of extents to be freed */ int *logflagsp, /* inode logging flags */ + xfs_extdelta_t *delta, /* Change made to incore extents */ int whichfork, /* data or attr fork */ int rsvd) /* OK to use reserved data blocks */ { @@ -567,6 +574,15 @@ xfs_bmap_add_extent( logflags = XFS_ILOG_CORE | XFS_ILOG_FEXT(whichfork); } else logflags = 0; + /* DELTA: single new extent */ + if (delta) { + if (delta->xed_startoff > new->br_startoff) + delta->xed_startoff = new->br_startoff; + if (delta->xed_blockcount < + new->br_startoff + new->br_blockcount) + delta->xed_blockcount = new->br_startoff + + new->br_blockcount; + } } /* * Any kind of new delayed allocation goes here. @@ -576,7 +592,7 @@ xfs_bmap_add_extent( ASSERT((cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL) == 0); if ((error = xfs_bmap_add_extent_hole_delay(ip, idx, cur, new, - &logflags, rsvd))) + &logflags, delta, rsvd))) goto done; } /* @@ -587,7 +603,7 @@ xfs_bmap_add_extent( ASSERT((cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL) == 0); if ((error = xfs_bmap_add_extent_hole_real(ip, idx, cur, new, - &logflags, whichfork))) + &logflags, delta, whichfork))) goto done; } else { xfs_bmbt_irec_t prev; /* old extent at offset idx */ @@ -612,17 +628,17 @@ xfs_bmap_add_extent( XFS_BTCUR_BPRV_WASDEL); if ((error = xfs_bmap_add_extent_delay_real(ip, idx, &cur, new, &da_new, first, flist, - &logflags, rsvd))) + &logflags, delta, rsvd))) goto done; } else if (new->br_state == XFS_EXT_NORM) { ASSERT(new->br_state == XFS_EXT_NORM); if ((error = xfs_bmap_add_extent_unwritten_real( - ip, idx, &cur, new, &logflags))) + ip, idx, &cur, new, &logflags, delta))) goto done; } else { ASSERT(new->br_state == XFS_EXT_UNWRITTEN); if ((error = xfs_bmap_add_extent_unwritten_real( - ip, idx, &cur, new, &logflags))) + ip, idx, &cur, new, &logflags, delta))) goto done; } ASSERT(*curp == cur || *curp == NULL); @@ -635,7 +651,7 @@ xfs_bmap_add_extent( ASSERT((cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL) == 0); if ((error = xfs_bmap_add_extent_hole_real(ip, idx, cur, - new, &logflags, whichfork))) + new, &logflags, delta, whichfork))) goto done; } } @@ -700,6 +716,7 @@ xfs_bmap_add_extent_delay_real( xfs_fsblock_t *first, /* pointer to firstblock variable */ xfs_bmap_free_t *flist, /* list of extents to be freed */ int *logflagsp, /* inode logging flags */ + xfs_extdelta_t *delta, /* Change made to incore extents */ int rsvd) /* OK to use reserved data block allocation */ { xfs_btree_cur_t *cur; /* btree cursor */ @@ -716,8 +733,8 @@ xfs_bmap_add_extent_delay_real( /* left is 0, right is 1, prev is 2 */ int rval=0; /* return value (logging flags) */ int state = 0;/* state bits, accessed thru macros */ - xfs_filblks_t temp; /* value for dnew calculations */ - xfs_filblks_t temp2; /* value for dnew calculations */ + xfs_filblks_t temp=0; /* value for dnew calculations */ + xfs_filblks_t temp2=0;/* value for dnew calculations */ int tmp_rval; /* partial logging flags */ enum { /* bit number definitions for state */ LEFT_CONTIG, RIGHT_CONTIG, @@ -839,6 +856,11 @@ xfs_bmap_add_extent_delay_real( goto done; } *dnew = 0; + /* DELTA: Three in-core extents are replaced by one. */ + temp = LEFT.br_startoff; + temp2 = LEFT.br_blockcount + + PREV.br_blockcount + + RIGHT.br_blockcount; break; case MASK3(LEFT_FILLING, RIGHT_FILLING, LEFT_CONTIG): @@ -872,6 +894,10 @@ xfs_bmap_add_extent_delay_real( goto done; } *dnew = 0; + /* DELTA: Two in-core extents are replaced by one. */ + temp = LEFT.br_startoff; + temp2 = LEFT.br_blockcount + + PREV.br_blockcount; break; case MASK3(LEFT_FILLING, RIGHT_FILLING, RIGHT_CONTIG): @@ -906,6 +932,10 @@ xfs_bmap_add_extent_delay_real( goto done; } *dnew = 0; + /* DELTA: Two in-core extents are replaced by one. */ + temp = PREV.br_startoff; + temp2 = PREV.br_blockcount + + RIGHT.br_blockcount; break; case MASK2(LEFT_FILLING, RIGHT_FILLING): @@ -936,6 +966,9 @@ xfs_bmap_add_extent_delay_real( ASSERT(i == 1); } *dnew = 0; + /* DELTA: The in-core extent described by new changed type. */ + temp = new->br_startoff; + temp2 = new->br_blockcount; break; case MASK2(LEFT_FILLING, LEFT_CONTIG): @@ -978,6 +1011,10 @@ xfs_bmap_add_extent_delay_real( xfs_bmap_trace_post_update(fname, "LF|LC", ip, idx, XFS_DATA_FORK); *dnew = temp; + /* DELTA: The boundary between two in-core extents moved. */ + temp = LEFT.br_startoff; + temp2 = LEFT.br_blockcount + + PREV.br_blockcount; break; case MASK(LEFT_FILLING): @@ -1025,6 +1062,9 @@ xfs_bmap_add_extent_delay_real( xfs_bmap_trace_post_update(fname, "LF", ip, idx + 1, XFS_DATA_FORK); *dnew = temp; + /* DELTA: One in-core extent is split in two. */ + temp = PREV.br_startoff; + temp2 = PREV.br_blockcount; break; case MASK2(RIGHT_FILLING, RIGHT_CONTIG): @@ -1067,6 +1107,10 @@ xfs_bmap_add_extent_delay_real( xfs_bmap_trace_post_update(fname, "RF|RC", ip, idx, XFS_DATA_FORK); *dnew = temp; + /* DELTA: The boundary between two in-core extents moved. */ + temp = PREV.br_startoff; + temp2 = PREV.br_blockcount + + RIGHT.br_blockcount; break; case MASK(RIGHT_FILLING): @@ -1112,6 +1156,9 @@ xfs_bmap_add_extent_delay_real( xfs_bmbt_set_startblock(ep, NULLSTARTBLOCK((int)temp)); xfs_bmap_trace_post_update(fname, "RF", ip, idx, XFS_DATA_FORK); *dnew = temp; + /* DELTA: One in-core extent is split in two. */ + temp = PREV.br_startoff; + temp2 = PREV.br_blockcount; break; case 0: @@ -1194,6 +1241,9 @@ xfs_bmap_add_extent_delay_real( xfs_bmap_trace_post_update(fname, "0", ip, idx + 2, XFS_DATA_FORK); *dnew = temp + temp2; + /* DELTA: One in-core extent is split in three. */ + temp = PREV.br_startoff; + temp2 = PREV.br_blockcount; break; case MASK3(LEFT_FILLING, LEFT_CONTIG, RIGHT_CONTIG): @@ -1209,6 +1259,13 @@ xfs_bmap_add_extent_delay_real( ASSERT(0); } *curp = cur; + if (delta) { + temp2 += temp; + if (delta->xed_startoff > temp) + delta->xed_startoff = temp; + if (delta->xed_blockcount < temp2) + delta->xed_blockcount = temp2; + } done: *logflagsp = rval; return error; @@ -1235,7 +1292,8 @@ xfs_bmap_add_extent_unwritten_real( xfs_extnum_t idx, /* extent number to update/insert */ xfs_btree_cur_t **curp, /* if *curp is null, not a btree */ xfs_bmbt_irec_t *new, /* new data to add to file extents */ - int *logflagsp) /* inode logging flags */ + int *logflagsp, /* inode logging flags */ + xfs_extdelta_t *delta) /* Change made to incore extents */ { xfs_btree_cur_t *cur; /* btree cursor */ xfs_bmbt_rec_t *ep; /* extent entry for idx */ @@ -1252,6 +1310,8 @@ xfs_bmap_add_extent_unwritten_real( /* left is 0, right is 1, prev is 2 */ int rval=0; /* return value (logging flags) */ int state = 0;/* state bits, accessed thru macros */ + xfs_filblks_t temp=0; + xfs_filblks_t temp2=0; enum { /* bit number definitions for state */ LEFT_CONTIG, RIGHT_CONTIG, LEFT_FILLING, RIGHT_FILLING, @@ -1380,6 +1440,11 @@ xfs_bmap_add_extent_unwritten_real( RIGHT.br_blockcount, LEFT.br_state))) goto done; } + /* DELTA: Three in-core extents are replaced by one. */ + temp = LEFT.br_startoff; + temp2 = LEFT.br_blockcount + + PREV.br_blockcount + + RIGHT.br_blockcount; break; case MASK3(LEFT_FILLING, RIGHT_FILLING, LEFT_CONTIG): @@ -1419,6 +1484,10 @@ xfs_bmap_add_extent_unwritten_real( LEFT.br_state))) goto done; } + /* DELTA: Two in-core extents are replaced by one. */ + temp = LEFT.br_startoff; + temp2 = LEFT.br_blockcount + + PREV.br_blockcount; break; case MASK3(LEFT_FILLING, RIGHT_FILLING, RIGHT_CONTIG): @@ -1459,6 +1528,10 @@ xfs_bmap_add_extent_unwritten_real( newext))) goto done; } + /* DELTA: Two in-core extents are replaced by one. */ + temp = PREV.br_startoff; + temp2 = PREV.br_blockcount + + RIGHT.br_blockcount; break; case MASK2(LEFT_FILLING, RIGHT_FILLING): @@ -1487,6 +1560,9 @@ xfs_bmap_add_extent_unwritten_real( newext))) goto done; } + /* DELTA: The in-core extent described by new changed type. */ + temp = new->br_startoff; + temp2 = new->br_blockcount; break; case MASK2(LEFT_FILLING, LEFT_CONTIG): @@ -1534,6 +1610,10 @@ xfs_bmap_add_extent_unwritten_real( LEFT.br_state)) goto done; } + /* DELTA: The boundary between two in-core extents moved. */ + temp = LEFT.br_startoff; + temp2 = LEFT.br_blockcount + + PREV.br_blockcount; break; case MASK(LEFT_FILLING): @@ -1574,6 +1654,9 @@ xfs_bmap_add_extent_unwritten_real( goto done; ASSERT(i == 1); } + /* DELTA: One in-core extent is split in two. */ + temp = PREV.br_startoff; + temp2 = PREV.br_blockcount; break; case MASK2(RIGHT_FILLING, RIGHT_CONTIG): @@ -1617,6 +1700,10 @@ xfs_bmap_add_extent_unwritten_real( newext))) goto done; } + /* DELTA: The boundary between two in-core extents moved. */ + temp = PREV.br_startoff; + temp2 = PREV.br_blockcount + + RIGHT.br_blockcount; break; case MASK(RIGHT_FILLING): @@ -1657,6 +1744,9 @@ xfs_bmap_add_extent_unwritten_real( goto done; ASSERT(i == 1); } + /* DELTA: One in-core extent is split in two. */ + temp = PREV.br_startoff; + temp2 = PREV.br_blockcount; break; case 0: @@ -1710,6 +1800,9 @@ xfs_bmap_add_extent_unwritten_real( goto done; ASSERT(i == 1); } + /* DELTA: One in-core extent is split in three. */ + temp = PREV.br_startoff; + temp2 = PREV.br_blockcount; break; case MASK3(LEFT_FILLING, LEFT_CONTIG, RIGHT_CONTIG): @@ -1725,6 +1818,13 @@ xfs_bmap_add_extent_unwritten_real( ASSERT(0); } *curp = cur; + if (delta) { + temp2 += temp; + if (delta->xed_startoff > temp) + delta->xed_startoff = temp; + if (delta->xed_blockcount < temp2) + delta->xed_blockcount = temp2; + } done: *logflagsp = rval; return error; @@ -1753,6 +1853,7 @@ xfs_bmap_add_extent_hole_delay( xfs_btree_cur_t *cur, /* if null, not a btree */ xfs_bmbt_irec_t *new, /* new data to add to file extents */ int *logflagsp, /* inode logging flags */ + xfs_extdelta_t *delta, /* Change made to incore extents */ int rsvd) /* OK to allocate reserved blocks */ { xfs_bmbt_rec_t *ep; /* extent record for idx */ @@ -1765,7 +1866,8 @@ xfs_bmap_add_extent_hole_delay( xfs_filblks_t oldlen=0; /* old indirect size */ xfs_bmbt_irec_t right; /* right neighbor extent entry */ int state; /* state bits, accessed thru macros */ - xfs_filblks_t temp; /* temp for indirect calculations */ + xfs_filblks_t temp=0; /* temp for indirect calculations */ + xfs_filblks_t temp2=0; enum { /* bit number definitions for state */ LEFT_CONTIG, RIGHT_CONTIG, LEFT_DELAY, RIGHT_DELAY, @@ -1844,6 +1946,9 @@ xfs_bmap_add_extent_hole_delay( XFS_DATA_FORK); xfs_iext_remove(ifp, idx, 1); ip->i_df.if_lastex = idx - 1; + /* DELTA: Two in-core extents were replaced by one. */ + temp2 = temp; + temp = left.br_startoff; break; case MASK(LEFT_CONTIG): @@ -1864,6 +1969,9 @@ xfs_bmap_add_extent_hole_delay( xfs_bmap_trace_post_update(fname, "LC", ip, idx - 1, XFS_DATA_FORK); ip->i_df.if_lastex = idx - 1; + /* DELTA: One in-core extent grew into a hole. */ + temp2 = temp; + temp = left.br_startoff; break; case MASK(RIGHT_CONTIG): @@ -1881,6 +1989,9 @@ xfs_bmap_add_extent_hole_delay( NULLSTARTBLOCK((int)newlen), temp, right.br_state); xfs_bmap_trace_post_update(fname, "RC", ip, idx, XFS_DATA_FORK); ip->i_df.if_lastex = idx; + /* DELTA: One in-core extent grew into a hole. */ + temp2 = temp; + temp = new->br_startoff; break; case 0: @@ -1894,6 +2005,9 @@ xfs_bmap_add_extent_hole_delay( XFS_DATA_FORK); xfs_iext_insert(ifp, idx, 1, new); ip->i_df.if_lastex = idx; + /* DELTA: A new in-core extent was added in a hole. */ + temp2 = new->br_blockcount; + temp = new->br_startoff; break; } if (oldlen != newlen) { @@ -1904,6 +2018,13 @@ xfs_bmap_add_extent_hole_delay( * Nothing to do for disk quota accounting here. */ } + if (delta) { + temp2 += temp; + if (delta->xed_startoff > temp) + delta->xed_startoff = temp; + if (delta->xed_blockcount < temp2) + delta->xed_blockcount = temp2; + } *logflagsp = 0; return 0; #undef MASK @@ -1925,6 +2046,7 @@ xfs_bmap_add_extent_hole_real( xfs_btree_cur_t *cur, /* if null, not a btree */ xfs_bmbt_irec_t *new, /* new data to add to file extents */ int *logflagsp, /* inode logging flags */ + xfs_extdelta_t *delta, /* Change made to incore extents */ int whichfork) /* data or attr fork */ { xfs_bmbt_rec_t *ep; /* pointer to extent entry ins. point */ @@ -1936,7 +2058,10 @@ xfs_bmap_add_extent_hole_real( xfs_ifork_t *ifp; /* inode fork pointer */ xfs_bmbt_irec_t left; /* left neighbor extent entry */ xfs_bmbt_irec_t right; /* right neighbor extent entry */ + int rval=0; /* return value (logging flags) */ int state; /* state bits, accessed thru macros */ + xfs_filblks_t temp=0; + xfs_filblks_t temp2=0; enum { /* bit number definitions for state */ LEFT_CONTIG, RIGHT_CONTIG, LEFT_DELAY, RIGHT_DELAY, @@ -1993,6 +2118,7 @@ xfs_bmap_add_extent_hole_real( left.br_blockcount + new->br_blockcount + right.br_blockcount <= MAXEXTLEN)); + error = 0; /* * Select which case we're in here, and implement it. */ @@ -2018,25 +2144,35 @@ xfs_bmap_add_extent_hole_real( XFS_IFORK_NEXT_SET(ip, whichfork, XFS_IFORK_NEXTENTS(ip, whichfork) - 1); if (cur == NULL) { - *logflagsp = XFS_ILOG_CORE | XFS_ILOG_FEXT(whichfork); - return 0; + rval = XFS_ILOG_CORE | XFS_ILOG_FEXT(whichfork); + } else { + rval = XFS_ILOG_CORE; + if ((error = xfs_bmbt_lookup_eq(cur, + right.br_startoff, + right.br_startblock, + right.br_blockcount, &i))) + goto done; + ASSERT(i == 1); + if ((error = xfs_bmbt_delete(cur, &i))) + goto done; + ASSERT(i == 1); + if ((error = xfs_bmbt_decrement(cur, 0, &i))) + goto done; + ASSERT(i == 1); + if ((error = xfs_bmbt_update(cur, left.br_startoff, + left.br_startblock, + left.br_blockcount + + new->br_blockcount + + right.br_blockcount, + left.br_state))) + goto done; } - *logflagsp = XFS_ILOG_CORE; - if ((error = xfs_bmbt_lookup_eq(cur, right.br_startoff, - right.br_startblock, right.br_blockcount, &i))) - return error; - ASSERT(i == 1); - if ((error = xfs_bmbt_delete(cur, &i))) - return error; - ASSERT(i == 1); - if ((error = xfs_bmbt_decrement(cur, 0, &i))) - return error; - ASSERT(i == 1); - error = xfs_bmbt_update(cur, left.br_startoff, - left.br_startblock, - left.br_blockcount + new->br_blockcount + - right.br_blockcount, left.br_state); - return error; + /* DELTA: Two in-core extents were replaced by one. */ + temp = left.br_startoff; + temp2 = left.br_blockcount + + new->br_blockcount + + right.br_blockcount; + break; case MASK(LEFT_CONTIG): /* @@ -2050,19 +2186,27 @@ xfs_bmap_add_extent_hole_real( xfs_bmap_trace_post_update(fname, "LC", ip, idx - 1, whichfork); ifp->if_lastex = idx - 1; if (cur == NULL) { - *logflagsp = XFS_ILOG_FEXT(whichfork); - return 0; + rval = XFS_ILOG_FEXT(whichfork); + } else { + rval = 0; + if ((error = xfs_bmbt_lookup_eq(cur, + left.br_startoff, + left.br_startblock, + left.br_blockcount, &i))) + goto done; + ASSERT(i == 1); + if ((error = xfs_bmbt_update(cur, left.br_startoff, + left.br_startblock, + left.br_blockcount + + new->br_blockcount, + left.br_state))) + goto done; } - *logflagsp = 0; - if ((error = xfs_bmbt_lookup_eq(cur, left.br_startoff, - left.br_startblock, left.br_blockcount, &i))) - return error; - ASSERT(i == 1); - error = xfs_bmbt_update(cur, left.br_startoff, - left.br_startblock, - left.br_blockcount + new->br_blockcount, - left.br_state); - return error; + /* DELTA: One in-core extent grew. */ + temp = left.br_startoff; + temp2 = left.br_blockcount + + new->br_blockcount; + break; case MASK(RIGHT_CONTIG): /* @@ -2077,19 +2221,27 @@ xfs_bmap_add_extent_hole_real( xfs_bmap_trace_post_update(fname, "RC", ip, idx, whichfork); ifp->if_lastex = idx; if (cur == NULL) { - *logflagsp = XFS_ILOG_FEXT(whichfork); - return 0; + rval = XFS_ILOG_FEXT(whichfork); + } else { + rval = 0; + if ((error = xfs_bmbt_lookup_eq(cur, + right.br_startoff, + right.br_startblock, + right.br_blockcount, &i))) + goto done; + ASSERT(i == 1); + if ((error = xfs_bmbt_update(cur, new->br_startoff, + new->br_startblock, + new->br_blockcount + + right.br_blockcount, + right.br_state))) + goto done; } - *logflagsp = 0; - if ((error = xfs_bmbt_lookup_eq(cur, right.br_startoff, - right.br_startblock, right.br_blockcount, &i))) - return error; - ASSERT(i == 1); - error = xfs_bmbt_update(cur, new->br_startoff, - new->br_startblock, - new->br_blockcount + right.br_blockcount, - right.br_state); - return error; + /* DELTA: One in-core extent grew. */ + temp = new->br_startoff; + temp2 = new->br_blockcount + + right.br_blockcount; + break; case 0: /* @@ -2104,29 +2256,41 @@ xfs_bmap_add_extent_hole_real( XFS_IFORK_NEXT_SET(ip, whichfork, XFS_IFORK_NEXTENTS(ip, whichfork) + 1); if (cur == NULL) { - *logflagsp = XFS_ILOG_CORE | XFS_ILOG_FEXT(whichfork); - return 0; + rval = XFS_ILOG_CORE | XFS_ILOG_FEXT(whichfork); + } else { + rval = XFS_ILOG_CORE; + if ((error = xfs_bmbt_lookup_eq(cur, + new->br_startoff, + new->br_startblock, + new->br_blockcount, &i))) + goto done; + ASSERT(i == 0); + cur->bc_rec.b.br_state = new->br_state; + if ((error = xfs_bmbt_insert(cur, &i))) + goto done; + ASSERT(i == 1); } - *logflagsp = XFS_ILOG_CORE; - if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff, - new->br_startblock, new->br_blockcount, &i))) - return error; - ASSERT(i == 0); - cur->bc_rec.b.br_state = new->br_state; - if ((error = xfs_bmbt_insert(cur, &i))) - return error; - ASSERT(i == 1); - return 0; + /* DELTA: A new extent was added in a hole. */ + temp = new->br_startoff; + temp2 = new->br_blockcount; + break; } + if (delta) { + temp2 += temp; + if (delta->xed_startoff > temp) + delta->xed_startoff = temp; + if (delta->xed_blockcount < temp2) + delta->xed_blockcount = temp2; + } +done: + *logflagsp = rval; + return error; #undef MASK #undef MASK2 #undef STATE_SET #undef STATE_TEST #undef STATE_SET_TEST #undef SWITCH_STATE - /* NOTREACHED */ - ASSERT(0); - return 0; /* keep gcc quite */ } /* @@ -2885,6 +3049,7 @@ xfs_bmap_del_extent( xfs_btree_cur_t *cur, /* if null, not a btree */ xfs_bmbt_irec_t *del, /* data to remove from extents */ int *logflagsp, /* inode logging flags */ + xfs_extdelta_t *delta, /* Change made to incore extents */ int whichfork, /* data or attr fork */ int rsvd) /* OK to allocate reserved blocks */ { @@ -3193,6 +3358,14 @@ xfs_bmap_del_extent( if (da_old > da_new) xfs_mod_incore_sb(mp, XFS_SBS_FDBLOCKS, (int)(da_old - da_new), rsvd); + if (delta) { + /* DELTA: report the original extent. */ + if (delta->xed_startoff > got.br_startoff) + delta->xed_startoff = got.br_startoff; + if (delta->xed_blockcount < got.br_startoff+got.br_blockcount) + delta->xed_blockcount = got.br_startoff + + got.br_blockcount; + } done: *logflagsp = flags; return error; @@ -3753,7 +3926,7 @@ xfs_bunmap_trace( if (ip->i_rwtrace == NULL) return; ktrace_enter(ip->i_rwtrace, - (void *)(__psint_t)XFS_BUNMAPI, + (void *)(__psint_t)XFS_BUNMAP, (void *)ip, (void *)(__psint_t)((ip->i_d.di_size >> 32) & 0xffffffff), (void *)(__psint_t)(ip->i_d.di_size & 0xffffffff), @@ -4538,7 +4711,8 @@ xfs_bmapi( xfs_extlen_t total, /* total blocks needed */ xfs_bmbt_irec_t *mval, /* output: map values */ int *nmap, /* i/o: mval size/count */ - xfs_bmap_free_t *flist) /* i/o: list extents to free */ + xfs_bmap_free_t *flist, /* i/o: list extents to free */ + xfs_extdelta_t *delta) /* o: change made to incore extents */ { xfs_fsblock_t abno; /* allocated block number */ xfs_extlen_t alen; /* allocated extent length */ @@ -4650,6 +4824,10 @@ xfs_bmapi( end = bno + len; obno = bno; bma.ip = NULL; + if (delta) { + delta->xed_startoff = NULLFILEOFF; + delta->xed_blockcount = 0; + } while (bno < end && n < *nmap) { /* * Reading past eof, act as though there's a hole @@ -4886,8 +5064,8 @@ xfs_bmapi( got.br_state = XFS_EXT_UNWRITTEN; } error = xfs_bmap_add_extent(ip, lastx, &cur, &got, - firstblock, flist, &tmp_logflags, whichfork, - (flags & XFS_BMAPI_RSVBLOCKS)); + firstblock, flist, &tmp_logflags, delta, + whichfork, (flags & XFS_BMAPI_RSVBLOCKS)); logflags |= tmp_logflags; if (error) goto error0; @@ -4983,8 +5161,8 @@ xfs_bmapi( } mval->br_state = XFS_EXT_NORM; error = xfs_bmap_add_extent(ip, lastx, &cur, mval, - firstblock, flist, &tmp_logflags, whichfork, - (flags & XFS_BMAPI_RSVBLOCKS)); + firstblock, flist, &tmp_logflags, delta, + whichfork, (flags & XFS_BMAPI_RSVBLOCKS)); logflags |= tmp_logflags; if (error) goto error0; @@ -5073,7 +5251,14 @@ xfs_bmapi( ASSERT(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE || XFS_IFORK_NEXTENTS(ip, whichfork) > ifp->if_ext_max); error = 0; - + if (delta && delta->xed_startoff != NULLFILEOFF) { + /* A change was actually made. + * Note that delta->xed_blockount is an offset at this + * point and needs to be converted to a block count. + */ + ASSERT(delta->xed_blockcount > delta->xed_startoff); + delta->xed_blockcount -= delta->xed_startoff; + } error0: /* * Log everything. Do this after conversion, there's no point in @@ -5185,6 +5370,8 @@ xfs_bunmapi( xfs_fsblock_t *firstblock, /* first allocated block controls a.g. for allocs */ xfs_bmap_free_t *flist, /* i/o: list extents to free */ + xfs_extdelta_t *delta, /* o: change made to incore + extents */ int *done) /* set if not done yet */ { xfs_btree_cur_t *cur; /* bmap btree cursor */ @@ -5242,6 +5429,10 @@ xfs_bunmapi( bno = start + len - 1; ep = xfs_bmap_search_extents(ip, bno, whichfork, &eof, &lastx, &got, &prev); + if (delta) { + delta->xed_startoff = NULLFILEOFF; + delta->xed_blockcount = 0; + } /* * Check to see if the given block number is past the end of the * file, back up to the last block if so... @@ -5340,7 +5531,8 @@ xfs_bunmapi( } del.br_state = XFS_EXT_UNWRITTEN; error = xfs_bmap_add_extent(ip, lastx, &cur, &del, - firstblock, flist, &logflags, XFS_DATA_FORK, 0); + firstblock, flist, &logflags, delta, + XFS_DATA_FORK, 0); if (error) goto error0; goto nodelete; @@ -5394,7 +5586,7 @@ xfs_bunmapi( prev.br_state = XFS_EXT_UNWRITTEN; error = xfs_bmap_add_extent(ip, lastx - 1, &cur, &prev, firstblock, flist, &logflags, - XFS_DATA_FORK, 0); + delta, XFS_DATA_FORK, 0); if (error) goto error0; goto nodelete; @@ -5403,7 +5595,7 @@ xfs_bunmapi( del.br_state = XFS_EXT_UNWRITTEN; error = xfs_bmap_add_extent(ip, lastx, &cur, &del, firstblock, flist, &logflags, - XFS_DATA_FORK, 0); + delta, XFS_DATA_FORK, 0); if (error) goto error0; goto nodelete; @@ -5456,7 +5648,7 @@ xfs_bunmapi( goto error0; } error = xfs_bmap_del_extent(ip, tp, lastx, flist, cur, &del, - &tmp_logflags, whichfork, rsvd); + &tmp_logflags, delta, whichfork, rsvd); logflags |= tmp_logflags; if (error) goto error0; @@ -5513,6 +5705,14 @@ nodelete: ASSERT(ifp->if_ext_max == XFS_IFORK_SIZE(ip, whichfork) / (uint)sizeof(xfs_bmbt_rec_t)); error = 0; + if (delta && delta->xed_startoff != NULLFILEOFF) { + /* A change was actually made. + * Note that delta->xed_blockount is an offset at this + * point and needs to be converted to a block count. + */ + ASSERT(delta->xed_blockcount > delta->xed_startoff); + delta->xed_blockcount -= delta->xed_startoff; + } error0: /* * Log everything. Do this after conversion, there's no point in @@ -5689,7 +5889,8 @@ xfs_getbmap( nmap = (nexleft > subnex) ? subnex : nexleft; error = xfs_bmapi(NULL, ip, XFS_BB_TO_FSBT(mp, bmv->bmv_offset), XFS_BB_TO_FSB(mp, bmv->bmv_length), - bmapi_flags, NULL, 0, map, &nmap, NULL); + bmapi_flags, NULL, 0, map, &nmap, + NULL, NULL); if (error) goto unlock_and_return; ASSERT(nmap <= subnex); |
